Cushion|Lab Grown|IGI

1.51ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG830643286

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG830643286

Diamond specifications and retailer prices

From $291 USD
£229 GBP
As of October 27, 2026
Save $989 USD (77%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,280 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG830643286 or 830643286. Listed at 19 retailers as of October 27, 2026, with prices from $291 to $1,280, a $989 spread on the same certified stone. Brilliant Earth lists it at $1,280. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830643286
Dimensions7.70 × 5.91 × 3.81 mm
L/W Ratio1.30
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.70 mm5.91 mm1.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830643286
Side View
Table 62.0%Crown 34°Girdle: MED-STKPavilion 33.5°Culet: NoneDepth 64.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $1,280 USD|Low: $235 USD|High: $1,690 USD|Avg: $726 USD|-24.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 10$235 USD
Retailer 16$291 USD
Retailer 11$294 USD
Retailer 2$420 USD
Retailer 20$441 USD
Retailer 4$448 USD
Retailer 18$479 USD
Retailer 6$514 USD
Retailer 8$516 USD
Retailer 17$609 USD
Retailer 13$668 USD
Retailer 15$837 USD
Retailer 9$892 USD
Retailer 12$1,015 USD
Retailer 14$1,034 USD
Retailer 19$1,046 USD
Retailer 7$1,063 USD
Retailer 3$1,090 USD
Retailer 5$1,227 USD
Brilliant Earth$1,280 USD

32 data points across 20 retailers

19 retailers$291 USD to $1,280 USD

A
Cheapest Retailer
-
$291 USD
£229 GBP
A
Retailer 2
-
$294 USD
HK$2,300 HKD
View
A
Retailer 3
-
$420 USD
€400 EUR
View
Retailer 4
-
$441 USD
ZAR 7,127 ZAR
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$448 USD
View
A
Retailer 6
-
$479 USD
£377 GBP
View
A
Retailer 7
-
$514 USD
View
A
Retailer 8
-
$516 USD
View
A
Retailer 9
-
$609 USD
A$937 AUD
View
B+
Retailer 10
-
$668 USD
View
B+
Retailer 11
-
$837 USD
SGD 1,131 SGD
View
B+
Retailer 12
-
$892 USD
View
Retailer 13
-
$1,015 USD
A$1,562 AUD
View
Price last confirmed 30 days ago
B
Retailer 14
-
$1,034 USD
View
B+
Retailer 15
-
$1,046 USD
£824 GBP
View
B
Retailer 16
-
$1,063 USD
View
Retailer 17
-
$1,090 USD
View
Price last confirmed 10 days ago
B
Retailer 18
-
$1,227 USD
View
Most Expensive
B
Brilliant Earth
21274481A · Oct 30
$1,280 USD
View
18 more retailers have this diamond
Prices start from $291 USDSave up to $989 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Cushion
$291 USD